#include "muduo/proto/dispatcher.h"
#include "muduo/proto/codec.h"
#include "muduo/base/Logging.h"
#include "muduo/base/Mutex.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpClient.h"
#include "muduo/net/EventLoopThread.h"
#include "muduo/base/CountDownLatch.h"

#include "request.pb.h"
#include <iostream>

class Client
{
public:
    typedef std::shared_ptr<bit::TranslateResponse> TranslateResponsePtr;
    typedef std::shared_ptr<bit::AddResponse> AddResponsePtr;
    typedef std::shared_ptr<google::protobuf::Message> MessagePtr;
    Client(const std::string &sip,int sport):
        _latch(1),_client(_loopthread.startLoop(),muduo::net::InetAddress(sip,sport),"Client"),
        _dispatcher(std::bind(&Client::onUnknownMessage, this,
        std::placeholders::_1, std::placeholders::_2, std::placeholders::_3)),
        _codec(std::bind(&ProtobufDispatcher::onProtobufMessage, &_dispatcher,
         std::placeholders::_1, std::placeholders::_2, std::placeholders::_3))
         {
            _dispatcher.registerMessageCallback<bit::TranslateResponse>(std::bind(&Client::onTranslate, this,
            std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    
            _dispatcher.registerMessageCallback<bit::AddResponse>(std::bind(&Client::onAdd, this,
            std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));  

            _client.setMessageCallback(std::bind(&ProtobufCodec::onMessage, &_codec,
            std::placeholders::_1, std::placeholders::_2, std::placeholders::_3)); 

            _client.setConnectionCallback(std::bind(&Client::onConnection,this,std::placeholders::_1));
         }
        //连接服务器---需要阻塞等待连接建立成功之后再返回
        void connect() 
        {
            _client.connect();
            _latch.wait();//阻塞等待，直到连接建立成功
        }
        void Translate(const std::string &msg)
        {
            bit::TranslateRequest req;
            req.set_msg(msg);
            send(&req);
        }
        void Add(int num1,int num2)
        {
            bit::AddRequest req;
            req.set_num1(num1);
            req.set_num2(num2);
            send(&req);
        }
private:
    bool send(const google::protobuf::Message *message) 
    {
        if (_conn->connected()) 
        {//连接状态正常，再发送，否则就返回false
            _codec.send(_conn,*message);
            return true;
        }
        return false;
    }           
    void onTranslate(const muduo::net::TcpConnectionPtr& conn,const TranslateResponsePtr& message,muduo::Timestamp)
    {
        std::cout << "翻译结果： " << message->msg() << std::endl;
    }
    void onAdd(const muduo::net::TcpConnectionPtr& conn,const AddResponsePtr& message,muduo::Timestamp)
    {
        std::cout << "加法结果： " << message->result() << std::endl;
    }
    void onUnknownMessage(const muduo::net::TcpConnectionPtr& conn,const MessagePtr& message,muduo::Timestamp)
    {
        LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
        conn->shutdown();
    }
    void onConnection(const muduo::net::TcpConnectionPtr&conn)
    {
        if (conn->connected()) 
        {
            _latch.countDown();//唤醒主线程中的阻塞
            _conn = conn;
        }
        else 
        {
            //连接关闭时的操作
            _conn.reset();
        }
    }
private:
    muduo::CountDownLatch _latch;//实现同步的
    muduo::net::EventLoopThread _loopthread;//异步循环处理线程
    muduo::net::TcpClient _client;//客户端
    muduo::net::TcpConnectionPtr _conn;//客户端对应的连接
    ProtobufDispatcher _dispatcher;//请求分发器
    ProtobufCodec _codec;//协议处理器
};

int main()
{
    Client client("127.0.0.1",8085);
    client.connect();
    client.Translate("hellow");
    client.Add(11,22);
    sleep(1);
    return 0;
}